>
Exams
>
Physics
>
Faradays laws of induction
>
if an emf of 2 v is induced in a coil in 6 s then
Question:
If an emf of 2 V is induced in a coil in 6 s, then the change of flux (in Wb) in the coil during the time is
Show Hint
Flux is measured in Webers (Wb).
KEAM - 2026
KEAM
Updated On:
Apr 27, 2026
3
24
6
18
12
Show Solution
Verified By Collegedunia
The Correct Option is
Solution and Explanation
Step 1: Concept
Faraday's Law: $e = \frac{\Delta \Phi}{\Delta t}$.
Step 2: Meaning
Change in flux $\Delta \Phi = e \times \Delta t$.
Step 3: Analysis
$\Delta \Phi = 2 \text{ V} \times 6 \text{ s} = 12$ Wb.
Step 4: Conclusion
The change in flux is 12 Wb.
Final Answer:
(E)
Download Solution in PDF
Was this answer helpful?
0
0
Top KEAM Physics Questions
A body oscillates with SHM according to the equation (in SI units),
$x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$
Its instantaneous displacement at
$t = 1$
second is
KEAM - 2014
Physics
Energy in simple harmonic motion
View Solution
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
KEAM - 2016
Physics
Keplers Laws
View Solution
Two capillary tubes A and B of diameter
$1\, mm$
and
$2\, mm$
respectively are dipped vertically in a liquid. If the capillary rise in A is 6 cm, then the capillary rise in B is
KEAM - 2015
Physics
Surface Tension
View Solution
In the circuit given in figure, 1 and 2 are ammeters. Just after key K is pressed to complete the circuit, the reading will be
KEAM - 1999
Physics
Current electricity
View Solution
A plate has a length
$ 5\pm 0.1\text{ }cm $
and breadth
$ 2\pm 0.01\text{ }cm $
. Then the area of the plate is:
KEAM - 2003
Physics
Units and measurement
View Solution
View More Questions
Top KEAM Faradays laws of induction Questions
The self-inductance of an air core solenoid is \( L \). If the number of turns in the solenoid is doubled, keeping all other factors constant, then its self-inductance will be
KEAM - 2025
Physics
Faradays laws of induction
View Solution
A circular coil of radius 10cm with 200 turns is placed $\perp$r to uniform magnetic field of 1.4T. IF magnetic field reduced to zero in 0.2s, what is the average induced emf
KEAM - 2026
Physics
Faradays laws of induction
View Solution
The law that is a symmetrical counterpart of Faraday’s law of electromagnetic induction is
KEAM - 2026
Physics
Faradays laws of induction
View Solution
An iron ring is held horizontally and a bar magnet is dropped gently through the ring with its length coinciding with the axis of the ring. The acceleration of the freely falling magnet (\(g\) = acceleration due to gravity) is
KEAM - 2025
Physics
Faradays laws of induction
View Solution
The mismatched pair regarding the induced emf is
KEAM - 2025
Physics
Faradays laws of induction
View Solution
View More Questions
Top KEAM Questions
i.
$\quad$
They help in respiration ii.
$\quad$
They help in cell wall formation iii.
$\quad$
They help in DNA replication iv.
$\quad$
They increase surface area of plasma membrane Which of the following prokaryotic structures has all the above roles?
KEAM - 2015
Prokaryotic Cells
View Solution
A body oscillates with SHM according to the equation (in SI units),
$x = 5 cos \left(2\pi t +\frac{\pi}{4}\right) .$
Its instantaneous displacement at
$t = 1$
second is
KEAM - 2014
Energy in simple harmonic motion
View Solution
The pH of a solution obtained by mixing 60 mL of 0.1 M BaOH solution at 40m of 0.15m HCI solution is
KEAM - 2016
Acids and Bases
View Solution
Kepler's second law (law of areas) of planetary motion leads to law of conservation of
KEAM - 2016
Keplers Laws
View Solution
If
$\int e^{2x}f' \left(x\right)dx =g \left(x\right)$
, then
$ \int\left(e^{2x}f\left(x\right) + e^{2x} f' \left(x\right)\right)dx =$
KEAM - 2017
Methods of Integration
View Solution
View More Questions